Contact device for braiding-machine stop motions



A. PETERSEN.

CONTACT DEVICE FOR BRAIDING MACHINE STOP MOTIONS. APPLICATION FILEDJULY30, 1920.

1,48%680. Patented 0012.3,1922.

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A. PETERSEN.

CONTACT DEVICE FOR BRAIDING MACHINE STOP MOTIONS.

' APPLICATION FILED Jun/20, 1920. g@ PltGIltGd Oct. 3, 1922..

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ANKER PETERSEN, 0F WINTHROP, h'IASSACIi-IUSETTS, ASSIGNOR TO AMERICANMOLD COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF CONNECTICUT.

conrnc'r nnvrcn non Jeannine-MACHINE sror MOTIONS.

Application filed July 30,

To all whom it may concern:

Be it known that I, ANKER PnrEnsnN, a citizen of the United States ofAmerica, and resident of Winthrop. in the county of Suffolk and State ofMassachusetts, have invented new and useful Improvements in ContactDevices for Braiding-Machine Stop Motions, of which the following is aspecification.

This invention relates to braiding n1a chines of that type employing twoseries of bobbin carriers arranged to rotate in opposite directions andin which the strands from the thread in a position to leave the circuitopen. 1

One arrangement ofelectrical stop-mechani'sm suitable for use inmachinesof this character is disclosed in the patent to Petersen 1,072,984,September 9, 1913, the present invention being an improvement over thedevice of said patent and being particularly adapted. for use in amachine such as disclosed in the patent to Petersen 1,105,452, July 28,1914..

In mechanism of this character it is desirable that the thread-actuateddevice whereby the electrical circuit is closed, shall be of as simpleconstruction as possible commensurate with certainty of operation and anobject of this invention. is to provide contactmaking elements of simpleform which shall be reliable in operation and little subject to theaction of oil and lint which commonly collect on the exposed surfaces ofmachines. of this type.

One mode of carrying this object into ef feet is disclosed in theaccompanying draw ings in Which,-- 1

Figure l is a plan View of a lQQbbin car- 1920. Serial 11 ,400,172.

rier of the inner series showing adjacent parts of the machine-frame insection, the thread-engaging element being shown in the position whichit occupies during the normal operation of the machine;

Figure 2 is a fragmentary plan view illustrating parts shown in Fig. 1,but in the position for stopping the machine;

Figure 3 is a partial side elevation of the device shown in Fig. 1;

Figure 4 is a side elevation partly in section, illustrating one of thebobbin carriers of the outer series with its associated contact-makingfinger; and

Figure 5 is a front elevation of the parts shown in Fig. 4.

' Referring now more particularly to Fig. 1,

1 is a rotary frame upon which the outer series ofbobbin carriers issupported, said frame being provided with an internal groove serving asa guide for rolls 23 mounted upon the inner bobbin carrier 4. At itsopposite end the carrier l is provided. with a wheel or roll 5 wherebysaid end of the carrier is supported during its revolution about thecenter of the machine. Further details of the bobbin carrier of theinner series so far as its general structure and mode of support andoperation is concerned, need not be further referred to herein as thecarrier is in general similar to that shown in the patent to Petersen1,331,672, Febraury 24, 1920, to which reference may be had for a fulldisclosure of the method of supporting such carrier.

1 is an inner ring integral or fixedly secured to the ring 1 but spacedtherefrom, and secured to the inner face of said ring are a series ofcontact plates at 6, said plates being insulated from the ring '1 butbeing electrically connected to each other. From one or more of saidplates an electrical conductor may'lead to a ring located at the centerof the machine, from which ring a conductor leads to a suitablesource ofelectrical energy. As an illustration of electrical connections suitablefor this purpose, reference may be had to the Patent to Petersen"1,072,984L her'einbefore referred to and in which patent such anarrangement is diagrammatieally illustrated in Fig. 10.

7 is a pivoted finger forming a contact brush, mounted at 8 upon theouter portion of the carrier frame 4, said finger being pressed by aspring 9 against the other periphery of the ring 1 The finger 7 isreferably provided with an opening 7 within which is seated a plug 7 ofcompressed wood or other fibrous or absorbent material, such plugextending substantially flush with the contacting face of the finger.This plug serves to absorb oil or other lubricating material and slowlyto feed it to the contact surface as required, thus providing for theproper lubrication of the parts with but little attention on the part ofthe operator. By means of this finger the carrier isinaintained inelectrical contact with the ring 1*, and therethrough with the machineframe, throughout the path of travel of the carrier. 10 is a wiperfinger, which may be of resilient metal such as spring-brass or whichmay be supported resiliently in any desired manner, said finger beingmounted upon a bracket 11 fixed to the carrier 4, the finger 10 beinginsulated from the bracket 11 in any suitable manner. 12 is a metallicplate insulated. from the carrier frame and herein shown as lying in asubstantially vertical plane, this plate being electrically connectedwith the finger 10. At the point 13 the side bar'4 of the carrier 4isslotted and within said slot is pivoted, bymeans of a pin 14, an ear15 extending from a thread finger comprising a plate 16 serving as asupport for a rod 17 having a thread-engaging loop. The plate 16 isprovided with a cam face 18 to the left of the pivot, as seen in Fig. 2and with a pointed projection 19 extending to the right of said pivot.20 is a leaf-spring secured to the carrier member 4 by means of a screw21 or its equivalent, said spring having an outwardly curved portion 22hearing against the cam face 18, the arrangement of parts being suchthat the spring tends to swing the plate 16 in a counter-clockwisedirection as seen in Fig. 1., whereby to bring the pointed projection 19into contact with the surface of plate 12. 23 isthe bobbin or spool ofusual construction mounted within the carrier 4- and 24 indicates thestrand leading from said spool and through the looped member 17, whenceit proceeds to the braiding point at the center of the machine. Y

In the normal operation of the parts hereinbefore described,'thetension. ofthe strand 24 in passing from the spoolto the braiding pointtends to swing the member 16 in a clockwise direction andto hold it inthe position shown in Fig. 1. *Upon breaking of this thread or upon. itsbecoming slack, the member 16 is permitted to turn until it assumes theosition shown in Fig.2

whereby the 1 pointed element 19 is brought into contact with thesurface of the plate 12. As the frame of the machine has electricalconnection with one pole of the battery or other sourcev of electricalenergy employed, and as the circuit is now complete through the carrierframe by the engagement of the element 19 with the plate 12, the stopmotion is actuated and the machine brought to rest. i

Turning now. to Fig. 4, 25 indicates one of the brackets carried uponthe top of the ring 1, and by means of which the spools 26 of the outerseries are supported. 27 is a rod having its opposite extremitiespivoted in adjacent brackets 25, and 28 is a finger fixed to said rodand provided at its outer extremity with a thread-engaging loop 29.Extendin from said bar 27 is a second finger 3O fi xed thereto andadapted to be brought into electrical contact with an insulated plate 31mounted upon the upper part of the frame 1 between the brackets 25, saidplate being electrically connected with the adjacent plate 6hereinbefore referred to. If desired, however, several plates 31 may beinterconnected electrically and the entire series placed in electricalcommunication with the central ring before referred to by means of asingle conductor.

32 is a bracket secured to the outer side of the frame member 1 by meansof screws 33, and 34 is a thread-guide upstanding from said bracket 32.35 is a second thread-guide fixed to the outer portion of the bracket32and from which the thread leads to the usual strand guiding leveremployed in machines of this type and by means of which the threadiscaused to pass alternately over and under the bobbin carriers of theinner series. Such strand levers are clearly illustrated in the patentto Petersen No. 1,105,- 452 hereinbefore referred to. I

36, is a coil spring surrounding the rod 27 and having one of its endsfixed thereto, its opposite end as at 37 engaging with one of thebrackets 25. The spring 36 is soarranged that it tends to turn the rod27 with its fingers 28 and 30 in a counter-clockwise direction to bringthe member 30 into contact with the member 31, whereby to comthenthrough the guide 35 to the strand carrier lever. Uponthe breaking orslackening of the strand from the spool 26, the spring 36 is permittedto act whereby the finger 30 is brought into contact with plate 31. andthe machine is brou ht to rest in the manner above described.

It will be seen from the foregoing description that in accordance withthe present invention, contact elements have been provided of a verysimple construction and such as are capable of ready manufacture withoutthe necessity for employing expensive or complicated tools, While at thesame time the devices are found to be extremely efficient in use. Thepointed projection 19 of the member 16 and the comparatively sharp endedfinger 30 of the member 28 present contact surfaces of small area whichtend to cut through any accumulation of lint on their cooperatingcontact surfaces whereby certainty of action is secured, while thesimple spring mechanism employed for moving the contact elements intocircuit-making position provides for the proper actuation of these partsregardless of the speed of the machine, the springs being of such acharacter that they are substantially unafiected by accumulations oflint or dust thereon.

I claim:

1. In a braiding carrier for use in braiding machines provided withelectrical stop mechanism, in combination, a horizontal frame member, adevice pivoted to said memher and provided with a thread-loop at itsextremity, a projection upon one side of said device, a leaf-springengaging said projection with its free extremity and having its otherextremity fixed to said frame member.

2. In a braiding machine having stop mechanism, in combination. abraiding carrier mounted to revolve in a horizontal plane, a threadfinger mounted in said carrier to swing in a substantially horizontalplane, said thread finger being provided with an inclined cam face, anda leaf spring secured to said frame and having one end engaging said camsurface.

3. In a contact-making device for braiding machines of the type providedwith electrical stop-mechanism, in combination, a thread finger, meansfor supporting said threadfinger to swing in a horizontal plane, saidthread finger being provided with an inclined cam face, a leaf springhaving a curved extremity bearing against said surface and a contactelement extending from said finger.

l. In a circuit-making device for electrical stop-motion for braidingmachines, in combination, a pivoted thread finger, a projectionextending to one side of the pivot thereof providing an inclined camface, an actuating element engaging said cam face, and

a contact making member carried by said finger and extending in theopposite direction from said projection.

5. In a braiding machine having electrical stop-motion mechanism, incombination, a braiding carrier comprising a slotted frame member, aplate pivoted within the slot in said member to swing in a substantiallyhorizontal plane, spring means for turning said member about its pivot,an angular contact element carried by said plate, a cooperating contactelement mounted upon I said frame, but insulated therefrom, and athread-engaging element mounted upon said plate. 7

6. In a braiding carrier for use in machines of the type employing anelectrical stop mechanism, in combination, a horizontally slotted framemember, a threadengaging finger pivoted to swing in said slot, resilientmeans for swinging said finger in one direction, an acute angledprojection extending from said finger and a contact plate mounted uponsaid frame member and insulated therefrom, said plate lying in the pathof movement of said acute angled projection.

7. In a braiding machine of the type employing an electricalstop-n1otion in combination, a braiding carrier comprising a framemember, a bracket .mounted thereupon, an insulated contact plate securedto said bracket and a contact making element pivoted to said framemember, said element comprising an acute angle projection constructedand arranged to be brought into contact with said plate, spring meansnormally tending to turn said element whereby to bring said projectioninto contact with said plate, and a thread-engaging loop carried by saidelement whereby the latter may be swung in opposition to the action ofsaid spring for breaking the circuit.

8. In a braiding machine having electrical stop-motion mechanism, incombination. a rotary frame element, a braiding carrier arranged to movein a direction opposite to that of said element, an insulated platemounted upon said element, a source of electrical energy having one polethereof electrically connected to said element and the opposite polethereof connected to said plate, a resilient finger contact mounted uponsaid carrier, but insulated therefrom, said finger being constructed andarranged to contact with said plate, a thread finger pivoted upon saidcarrier to swin in a substantially horizontal plane, said thread fingerbeing provided with a pointed contact element arranged to makeelectrical connection with said contact finger, and spring meansnormally tending to move said thread finger into position to make suchconnection.

9. A braiding machine of the type employing an electrical stop-motioncomprising in combination a rotatable support, spool carrying meansmounted thereon, an element pivotally supported by said means,oppositely directed members projecting from said element, one of saidmembers constituting an. electrical circuit closer and be ing engageablewith a fixed contact, a spring normally tending to turn said elee mentin a counter-clockwise direction whereby to urge said circuit closerinto engagement With said contact and a thread engaging device carriedby the other of said members whereby said element may be turned in theopposite direction by tension of thread engaging said device to preventengagement of said circuit closer with the 10 fixed contact.

Signed by me at Boston, Massachusetts, this 26th day of July, 1920.

ANKER PETERSEN.

